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How do you find the disk size of a Postgres / PostgreSQL table and its indexes
I'm coming to Postgres from Oracle and looking for a way to find the table and index size in terms of bytes/MB/GB/etc , or even better the size for all tables. In Oracle I had a nasty long query that looked at user_lobs and user_segments to give back an answer.
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How can I match a string with a regex in Bash?
I am trying to write a bash script that contains a function so when given a .tar , .tar.bz2 , .tar.gz etc. file it uses tar with the relevant switches to decompress the file.
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Remove rows with all or some NAs (missing values) in data.frame
...nicer for just removing all NA's. complete.cases allows partial selection by including only certain columns of the dataframe:
> final[complete.cases(final[ , 5:6]),]
gene hsap mmul mmus rnor cfam
2 ENSG00000199674 0 2 2 2 2
4 ENSG00000207604 0 NA NA 1 2
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Writing data into CSV file in C#
I am trying to write into a csv file row by row using C# language. Here is my function
15 Answers
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A Regex that will never be matched by anything
...is might sound like a stupid question, but I had a long talk with some of my fellow developers and it sounded like a fun thing to think of.
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How to pass all arguments passed to my bash script to a function of mine? [duplicate]
Let's say I have defined a function abc() that will handle the logic related to analyzing the arguments passed to my script.
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Rename Pandas DataFrame Index
...index. I want to rename the index and column name, but with df.rename() only the column name is renamed. Bug? I'm on version 0.12.0
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C# Test if user has write access to a folder
I need to test if a user can write to a folder before actually attempting to do so.
18 Answers
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How to convert from System.Enum to base integer?
I'd like to create a generic method for converting any System.Enum derived type to its corresponding integer value, without casting and preferably without parsing a string.
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How do I use arrays in C++?
C++ inherited arrays from C where they are used virtually everywhere. C++ provides abstractions that are easier to use and less error-prone ( std::vector<T> since C++98 and std::array<T, n> since C++11 ), so the need for arrays does not arise quite as often as it does in C. However, ...